abnormal vas deferens morphology MP:0002769 MPheno.ontology abnormal ductus deferens morphology any structural anomaly of the secretory duct of the testicle that carries spermatozoa, running from the epididymis, of which it is the continuation, to the prostatic urethra where it terminates to form ejaculatory duct vas deferens dysplasia abnormal internal male genitalia morphology